82 lines
3.7 KiB
C#
82 lines
3.7 KiB
C#
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using UnityEngine;
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namespace BehaviorDesigner.Runtime.Tasks.Movement
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{
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[TaskDescription("Wander using the Unity NavMesh.")]
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[TaskCategory("Movement")]
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[HelpURL("https://www.opsive.com/support/documentation/behavior-designer-movement-pack/")]
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[TaskIcon("c8e612848487a184f9090d416c932c47", "cc64e7434e679324c8cb39430f19eda8")]
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public class Wander : NavMeshMovement
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{
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[Tooltip("Minimum distance ahead of the current position to look ahead for a destination")]
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[UnityEngine.Serialization.FormerlySerializedAs("minWanderDistance")]
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public SharedFloat m_MinWanderDistance = 20;
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[Tooltip("Maximum distance ahead of the current position to look ahead for a destination")]
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[UnityEngine.Serialization.FormerlySerializedAs("maxWanderDistance")]
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public SharedFloat m_MaxWanderDistance = 20;
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[Tooltip("The maximum number of degrees that the agent can turn when wandering")]
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public SharedFloat m_MaxWanderDegrees = 5;
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[Tooltip("The minimum length of time that the agent should pause at each destination")]
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[UnityEngine.Serialization.FormerlySerializedAs("minPauseDuration")]
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public SharedFloat m_MinPauseDuration = 0;
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[Tooltip("The maximum length of time that the agent should pause at each destination (zero to disable)")]
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[UnityEngine.Serialization.FormerlySerializedAs("maxPauseDuration")]
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public SharedFloat m_MaxPauseDuration = 0;
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[Tooltip("The maximum number of retries per tick (set higher if using a slow tick time)")]
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[UnityEngine.Serialization.FormerlySerializedAs("targetRetries")]
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public SharedInt m_TargetRetries = 1;
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private float m_PauseTime;
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private float m_DestinationReachTime;
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// There is no success or fail state with wander - the agent will just keep wandering
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public override TaskStatus OnUpdate()
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{
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if (HasArrived()) {
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// The agent should pause at the destination only if the max pause duration is greater than 0
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if (m_MaxPauseDuration.Value > 0) {
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if (m_DestinationReachTime == -1) {
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m_DestinationReachTime = Time.time;
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m_PauseTime = Random.Range(m_MinPauseDuration.Value, m_MaxPauseDuration.Value);
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} else if (m_DestinationReachTime + m_PauseTime <= Time.time) {
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// Only reset the time if a destination has been set.
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if (TrySetTarget()) {
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m_DestinationReachTime = -1;
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}
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}
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} else {
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TrySetTarget();
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}
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}
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return TaskStatus.Running;
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}
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private bool TrySetTarget()
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{
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var direction = transform.forward;
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var attempts = m_TargetRetries.Value;
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Vector3 destination;
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while (attempts > 0) {
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direction = Quaternion.Euler(0, Random.Range(-m_MaxWanderDegrees.Value, m_MaxWanderDegrees.Value), 0) * direction;
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destination = transform.position + direction.normalized * Random.Range(m_MinWanderDistance.Value, m_MaxWanderDistance.Value);
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if (SamplePosition(ref destination)) {
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SetDestination(destination);
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return true;
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}
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attempts--;
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}
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return false;
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}
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// Reset the public variables
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public override void OnReset()
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{
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m_MinWanderDistance = 20;
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m_MaxWanderDistance = 20;
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m_MaxWanderDegrees = 5;
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m_MinPauseDuration = 0;
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m_MaxPauseDuration = 0;
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m_TargetRetries = 1;
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}
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}
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}
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